Written on 2008-05-05 15:34:39Bug reports work! Finlay McWalter commented on the bug report saying that the package maintainer, Chris Hanson, found a fix for the issue. His fix is far better than my workaround. Apparently, AppArmor is preventing applications (such as MIT-Scheme) from accessing lower memory. The fix is to edit /etc/sysctl.conf and change the vm.mmap_min_addr value from 65536 to 0. Afterwards, MIT-Scheme works just fine.